title: Bulk heterojunction solar cells using thieno[3,4-c]pyrrole-4,6-dione and dithieno[3,2-b:2',3'-d]silole copolymer with a power conversion efficiency of 7.3%.
abstract: A new alternating copolymer of dithienosilole and thienopyrrole-4,6-dione (PDTSTPD) possesses both a low optical bandgap (1.73 eV) and a deep highest occupied molecular orbital energy level (5.57 eV). The introduction of branched alkyl chains to the dithienosilole unit was found to be critical for the improvement of the polymer solubility. When blended with PC(71)BM, PDTSTPD exhibited a power conversion efficiency of 7.3% on the photovoltaic devices with an active area of 1 cm(2).
authors.affiliation: Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada.
authors.forename: Ta-Ya
authors.initials: TY
authors.lastname: Chu
authors.forename: Jianping
authors.initials: J
authors.lastname: Lu
authors.forename: Serge
authors.initials: S
authors.lastname: Beaupré
authors.forename: Yanguang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jean-Rémi
authors.initials: JR
authors.lastname: Pouliot
authors.forename: Salem
authors.initials: S
authors.lastname: Wakim
authors.forename: Jiayun
authors.initials: J
authors.lastname: Zhou
authors.forename: Mario
authors.initials: M
authors.lastname: Leclerc
authors.forename: Zhao
authors.initials: Z
authors.lastname: Li
authors.forename: Jianfu
authors.initials: J
authors.lastname: Ding
authors.forename: Ye
authors.initials: Y
authors.lastname: Tao
mesh_terms: D015394:Molecular Structure; D017646:Organosilicon Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*
chemical_list: D017646:Organosilicon Compounds; D011108:Polymers; D011758:Pyrroles; C559048:dithieno(3,2-b-2',3'-d)silole; C559049:thieno(3,4-c)pyrrole-4,6-dione